Barack Obama and Mitt Romney prepare to go head to head in the first debate

Left: Mitt Romney pauses while speaking during the American Legion 94th National Convention in Indianapolis, Indiana, on August 29, 2012. Right: Barack Obama pauses while speaking during an event in the Eisenhower Executive Office Building on the White House campus in Washington, DC, on August 3, 2012.Picture: Justin Sullivan/Getty Images/AFP - Brendan SMIALOWSKI